MCP1603T-330I/OS Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
Microchip MCP1603T-330I/OS is a 500mA synchronous buck switching regulator with a fixed 3.3V output running at 2MHz PWM/PFM in a space-saving TSOT-5 package. It supports 2.7V to 5.5V input, enabling efficient power conversion for portable and battery-operated designs.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MCP1603T-330I/OS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.9500(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 2MHz PWM/PFM switching operation enables use of tiny external inductors and capacitors, minimizing PCB footprint
- 500mA output current at fixed 3.3V with current-mode control for fast transient response and reliable regulation
- Wide input range of 2.7V to 5.5V supports single-cell Li-ion and USB-powered applications in a TSOT-5 package
Applications
The MCP1603T-330I/OS is designed for portable consumer electronics, wireless sensor nodes, and wearable devices that require an efficient 3.3V regulated supply from a single-cell Li-ion or USB source. Its 2MHz switching frequency allows the use of small external passives, making it suitable for highly compact PCB layouts under 25mm². The PWM/PFM auto-switching capability further extends battery life under light-load conditions in IoT and handheld instruments.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TSOT-5 |
| Factory Lead Time | 21Weeks |
| YTEOL | 8 |
| Additional Feature | IT CAN ALSO OPERATE WITH PULSE FREQUENCY MODULATION |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 2.7V |
| Input Voltage-Nom | 3.6V |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 0.5A |
| Output Voltage-Max | 3.399V |
| Output Voltage-Min | 3.201V |
| Output Voltage-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 2800kHz |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the MCP1603T-330I/OS achieve high efficiency across varying load currents?
The MCP1603T-330I/OS uses automatic PWM/PFM mode switching; at loads below approximately 50mA it enters PFM to reduce switching losses, while at heavier loads up to 500mA it stays in 2MHz PWM mode, maintaining efficiency above 80% across a wide current range.
What external components are required for a typical MCP1603T-330I/OS 3.3V design?
A typical circuit needs only a 4.7µH inductor and two small ceramic capacitors—approximately 10µF on the input and 22µF on the output—thanks to the 2MHz switching frequency that permits these compact component values on a PCB footprint under 25mm².
Which portable application designs benefit most from the MCP1603T-330I/OS?
Battery-operated IoT nodes, Bluetooth Low Energy modules, and wearable sensors powered by a 3.7V single-cell Li-ion battery benefit most; the 2.7V minimum input ensures regulation down to near-depleted cell voltages, and the 500mA peak current handles short RF transmission bursts.
How does the TSOT-5 package size of MCP1603T-330I/OS compare to typical 5-pin SOT packages?
The TSOT-5 package measures approximately 1.6mm × 1.6mm, roughly 30% smaller than a standard SOT-23-5 outline, allowing a complete 3.3V/500mA buck converter solution to occupy less than 25mm² total board area including passives.
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